Home / 12,579.40-18,857.94-6,331.24

Finding the Fourth Proportional to 12,579.40, 18,857.94 and 6,331.24

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Solution

The fourth proportional to 12,579.40, 18,857.94 and 6,331.24 is: 9,491.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,579.40 : 18,857.94 = 6,331.24 : x
  2. Step 2: Convert to fraction form
    12,579.40/18,857.94 = 6,331.24/x
  3. Step 3: Cross multiply
    12,579.40x = 18,857.94 × 6,331.24
  4. Step 4: Simplify right side
    12,579.40x = 119,394,144.05
  5. Step 5: Solve for x
    x = 119,394,144.05/12,579.40
  6. Step 6: Final answer
    x = 9,491.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.